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 Sterilizing Seeds

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IXOXI
Cereus about Cacti
IXOXI

Number of posts : 521
Location : Glenhaven, NSW
Registration date : 2011-12-08

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PostSubject: Sterilizing Seeds   Sterilizing Seeds EmptyFri May 25, 2012 1:45 pm

What are some ways to sterilize the outside of large seeds like Astrophytums, so that they don't get covered later in the white fuzz? Anyone have experience with hydrogen peroxide, or bleach? What concentrations are good?
Thanks,
IX
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Hanazono
Astromaniac
Hanazono

Number of posts : 825
Location : SA
Registration date : 2008-09-14

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PostSubject: Re: Sterilizing Seeds   Sterilizing Seeds EmptySat May 26, 2012 8:39 am

I collect Astrophytum seeds by myself and wash seeds well by water and dried.
I used seedrising pottingmix, organic base in market and so I use a systemic fungicide.

1. Spray over the fungicide on top of pottingmix in a pot before sowing seeds.
2. Sowing seeds
3. Spray over the fungicide on top of pottingmix and seeds again just after sown seeds.

You should not use the fungicide when germination was started.
The name of fungicide is "Fongarid".

I have never seen white fuzz in my seedling pots.
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IXOXI
Cereus about Cacti
IXOXI

Number of posts : 521
Location : Glenhaven, NSW
Registration date : 2011-12-08

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PostSubject: Re: Sterilizing Seeds   Sterilizing Seeds EmptySat May 26, 2012 10:52 am

Thank you Hana, Only had this happen once, but it killed 95% of the astros that germinated.
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IXOXI
Cereus about Cacti
IXOXI

Number of posts : 521
Location : Glenhaven, NSW
Registration date : 2011-12-08

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PostSubject: Re: Sterilizing Seeds   Sterilizing Seeds EmptyMon Jun 18, 2012 10:11 pm

Just a bit of an update on this post. I've gotten the Fongarid, and have just started using it.
Now out of that batch of 300 seeds that did get hit hard by the fungus, I grafted the remaining 13, out of which 6 still rotted anyhow, leaving 7 survivors from the original 300.
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PostSubject: Re: Sterilizing Seeds   Sterilizing Seeds Empty

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